Copolycarbonate resin composition

Abstract

Disclosed is a copolycarbonate composition including: a copolycarbonate having an aromatic polycarbonate-based first repeating unit and one or more aromatic polycarbonate-based second repeating units having siloxane bonds; and a polycarbonate, where the copolycarbonate composition has an impact strength at room temperature of 830 to 1000 J/m as measured at 23 ° C. in accordance with ASTM D256 (⅛ inch, Notched Izod), where the one or more aromatic polycarbonate-based second repeating units having siloxane bonds include a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3: and where the copolycarbonate composition satisfies the following Equation 1: 1.0682× X +0.51< Y <1.0682× X +1.2.  [Equation 1] The copolycarbonate composition provides an improved mobility.

The invention claimed is: 
     
       1. A copolycarbonate composition comprising:
 a copolycarbonate comprising an aromatic polycarbonate-based first repeating unit and one or more aromatic polycarbonate-based second repeating units haying siloxane bonds, and 
 a polycarbonate, 
 wherein the copolycarbonate composition has an impact strength at room temperature of 830 to 1000 J/m as measured at 23° C. in accordance with ASTM D256 (⅛ inch, Notched Izod), 
 wherein the one or more aromatic polycarbonate-based second repeating units having siloxane bonds comprise a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3: 
 
       
         
           
           
               
               
           
         
         in Chemical Formula 2, 
         each of X 1  is independently C 1-10  alkylene, 
         each of R 5  is independently hydrogen; C 1-15  alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted C 1-10  alkoxy, or C 6-20  aryl; halogen; C 1-10  alkoxy; allyl; C 1-10  haloalkyl; or C 6-20  aryl, and 
         n is an integer of 10 to 50, 
       
       
         
           
           
               
               
           
         
         in Chemical Formula 3, 
         each of X 2  is independently C 1-10  alkylene, 
         each of Y 1  is independently hydrogen, C 1-6  alkyl, halogen, hydroxy, C 1-6  alkoxy, or C 6-20  aryl, 
         each of R 6  is independently hydrogen; C 1-15  alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted C 1-10  alkoxy, or C 6-20  aryl; halogen; C 1-10  alkoxy; allyl; C 1-10 haloalkyl; or C 6-20  aryl, and 
         m is an integer of 55 to 80, and 
         wherein the copolycarbonate composition satisfies the following Equation 1:
   1.0682× X+ 0.51< Y <1.0682× X+ 1.2  [Equation 1]
 
 
         in the Equation 1, 
         X means a silicon content (wt. %) relative to the total weight of the copolycarbonate and polycarbonate, and 
         Y means a value in which the FID intensity obtained through TD (Time-domain) FID experiment is normalized at 0.1 msec. 
       
     
     
       2. The copolycarbonate composition of  claim 1 , wherein
 X is 0.1 to 20. 
 
     
     
       3. The copolycarbonate composition of  claim 1 , wherein
 the copolycarbonate composition satisfies the following Equation 1-1:
   1.0682× X+ 0.60< Y <1.0682× X+ 1.0  [Equation 1-1]
 
 
 in the Equation 1-1, 
 X and Y are the same as defined in  claim 1 . 
 
     
     
       4. The copolycarbonate composition of  claim 1 , wherein
 the copolycarbonate composition has a weight average molecular weight (g/mol) of 1,000 to 100,000. 
 
     
     
       5. The copolycarbonate composition of  claim 1 , wherein
 the aromatic polycarbonate-based first repeating unit is represented by the following Chemical Formula 1: 
 
       
         
           
           
               
               
           
         
         in the Chemical Formula 1, 
         R 1 , R 2 , R 3  and R 4  are each independently hydrogen, C 1-10  alkyl, C 1-10  alkoxy, or halogen, and 
         Z is C 1-10  alkylene unsubstituted or substituted with phenyl, C 3-15  cycloalkylene unsubstituted or substituted with C 1-10  alkyl, O, S, SO, SO 2 , or CO. 
       
     
     
       6. The copolycarbonate composition of  claim 1 , wherein
 the aromatic polycarbonate-based first repeating unit is derived from one or more aromatic diol compounds selected from the group consisting of bis(4-hydroxyphenyl)methane, bis(4-hydroxyphenyl)ether, bis(4-hydroxyphenyl)sulthne, bis(4-hydroxyphenyi)sulfoxide, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)ketone, 1,1-bis(4-hydroxyphenyl)ethane, bisphenol A, 2,2-bis(4-hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis(4-hydroxy-3,5-dichlorophenyl)propane, 2,2-bis(4-hydroxy-3-bromophenyl)propane, 2,2-bis(4-hydroxy-3-chlorophenyl)propane, 2,2-bis(4-hydroxy-3-methylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dimethylphenyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, and bis(4-hydroxyphenyl)diphenylmethane. 
 
     
     
       7. The copolycarbonate composition of  claim 1 , wherein
 the aromatic polycarbonate-based first repeating unit is represented by the following Chemical Formula 1-1: 
 
       
         
           
           
               
               
           
         
       
     
     
       8. The copolycarbonate composition of  claim 1 , wherein
 the repeating unit represented by Chemical Formula 2 is represented by the following Chemical Formula 2-2: 
 
       
         
           
           
               
               
           
         
       
     
     
       9. The copolycarbonate composition of  claim 1 , wherein
 the repeating unit represented by Chemical Formula 3 is represented by the following Chemical Formula 3-2: 
 
       
         
           
           
               
               
           
         
       
     
     
       10. The copolycarbonate composition of  claim 1 , wherein a polysiloxane structure is not introduced in a main chain of the polycarbonate.